21222020002002 has 32 divisors (see below), whose sum is σ = 44678167019520. Its totient is φ = 6701656001040.

The previous prime is 21222020001967. The next prime is 21222020002063. The reversal of 21222020002002 is 20020002022212.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30466503 + ... + 31155285.

It is an arithmetic number, because the mean of its divisors is an integer number (1396192719360).

Almost surely, 2^{21222020002002} is an apocalyptic number.

21222020002002 is an abundant number, since it is smaller than the sum of its proper divisors (23456147017518).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21222020002002 is a wasteful number, since it uses less digits than its factorization.

21222020002002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 959078.

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 21222020002002 its reverse (20020002022212), we get a palindrome (41242022024214).

The spelling of 21222020002002 in words is "twenty-one trillion, two hundred twenty-two billion, twenty million, two thousand, two".